package exam.common.util;

public class NullCheckUtil {
	/**
	 * Phuong thuc kiem tra doi tuong co NULL khong
	 * @param obj
	 * @return boolean
	 */
	public static boolean isNUll(Object obj) {
		return (obj == null);
	}
	
	/**
	 * Phuong thuc kiem tra doi tuong co khac NULL khong
	 * @param obj
	 * @return boolean
	 */
	public static boolean isNotNull(Object obj) {
		return (obj != null);
	}
}
